Malicious PDF — malware analysis report

Static analysis result for SHA-256 d052cd0fbd3b4bef…

MALICIOUS

PDF

84.0 KB Created: 2021-01-16 21:18:00 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-10-27
MD5: 9e7661a9c8dc388275981e8a49f0f032 SHA-1: 8b0f3b399dce33253645e7c4743569fd2a62b66b SHA-256: d052cd0fbd3b4bef54c6da19686136fa44912af975f94f3268a0f725ca3142aa
126 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF file was flagged by multiple heuristics, including a critical ClamAV detection for 'Pdf.Phishing.Trojan' and an ML classifier indicating maliciousness. The document contains a high number of embedded URLs pointing to external sites, suggesting a phishing or malware distribution attempt. While no scripts were explicitly extracted, the PDF structure and numerous external links are indicative of malicious intent, likely to redirect users to compromised or malicious web content.

Machine Learning

  • Nyx PDF Classifier malicious score 0.9996

Heuristics 5

  • ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://trafftec.ru/123?utm_term=family+guy+epic+gamer+moments PDF link annotation
    • https://cdn.sqhk.co/dizoketa/Cmjgkq9/bojororotipigos.pdfIn PDF document text
    • https://cdn.sqhk.co/xasakeza/hdhbigQ/66316264979.pdfIn PDF document text
    • https://site-1177942.mozfiles.com/files/1177942/48451745617.pdfIn PDF document text
    • https://site-1175166.mozfiles.com/files/1175166/jelakizefizewesamo.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4419204/normal_5fac02bd15976.pdfIn PDF document text
    • https://site-1178950.mozfiles.com/files/1178950/38005260162.pdfIn PDF document text
    • https://site-1177548.mozfiles.com/files/1177548/republique_restaurants_paris.pdfIn PDF document text
    • https://xejibojap.weebly.com/uploads/1/3/4/3/134310503/topevenikefal-fimikokeworiju.pdfIn PDF document text
    • https://cdn.sqhk.co/povewepalu/PcTgf5x/archery_equipment_for_sale_near_me.pdfIn PDF document text
    • https://site-1179563.mozfiles.com/files/1179563/zolowijerivazibagiku.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text
    • http://dejavu.sourceforge.netIn PDF document text
    • http://dejavu.sourceforge.net/wiki/index.php/LicenseIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000f6dc.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xF6DC 5308 bytes
SHA-256: 19d3fc1e0978898f050b213c156f6c0d40ce934a840b97f22c567bfbc8a2ee14
font_01_sfnt_off000108e8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x108E8 10980 bytes
SHA-256: 7e405b2dfb7aaa30a191e55fae930c87d60cd59742810936e1fd1dcf1c92fb06
font_02_sfnt_off00012e95.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x12E95 16096 bytes
SHA-256: 834ba978c2ec1375ff4a90827ae1598a538c1297e5fe5ba107fd18defc746f22

Open this report in the interactive analyzer, or submit your own file for analysis.